You only need to specify the fields that matter for your page. In fact, you don’t need to specify any fields at all if you’re happy with the defaults. In this example I just specify min_depth and max_depth:
I have now been able to implement your solution and I am very thankful, it seems to work like a charm.
I am curious to deepen my knowledge about this and to be able to progress step by step into more advanced things.
Do you know any solid platform or knowledge source where I could deepen my knowledge in both YAML and templater?
I have been trying to study the syntax of them both, though since I am very new to all of this I think that I need a step by step explaination for each templater (module?) And same thing with the YAML frontmatter.